package com.jankey;
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.util.TypedValue;
import android.view.View;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
public class NoScrollingListView extends LinearLayout
{
private BaseAdapter adapter;
private OnItemClickListener onItemClickListener;
/**
* 通过 Java代码 实例化
* @param context
*/
public NoScrollingListView(Context context)
{
super(context);
//设置LinearLayoutForListView为垂直布局,否者默认为水平布局,容易疏忽导致子项显示不全
NoScrollingListView.this.setOrientation(LinearLayout.VERTICAL);
}
/**
* 此构造函数可以允许我们通过 XML的方式注册 控件
* @param context
* @param attrs
*/
public NoScrollingListView(Context context, AttributeSet attrs)
{
super(context, attrs);
NoScrollingListView.this.setOrientation(LinearLayout.VERTICAL);
}
/**
* 设置适配器
*
* @param adpater
*/
public void setAdapter(BaseAdapter adpater)
{
this.adapter = adpater;
bindLinearLayout();
}
/**
* 获取适配器Adapter
*
* @return adapter
*/
public BaseAdapter getAdpater()
{
return adapter;
}
/**
* 绑定布局:将每个子项的视图view添加进此线性布局LinearLayout中
*/
public void bindLinearLayout()
{
int count = adapter.getCount();
for (int i = 0; i < count; i++)
{
View v = adapter.getView(i, null, null);
if (i != count - 1)
{ //添加每项item之间的分割线
v = setDivider(v);
}
addView(v, i);
}
setItemClickListener();
Log.v("countTAG", "" + count);
}
/**
* 添加每项item之间的分割线
*
* @param view
* @return
*/
public View setDivider(View view)
{
//分割线view
View lineView = new View(view.getContext());
// 将数据从dip(即dp)转换到px,第一参数为数据原单位(此为DIP),第二参数为要转换的数据值
float fPx = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
(float) 0.5, view.getResources().getDisplayMetrics());
int iPx = Math.round(fPx);
LayoutParams layoutParams = new LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, iPx);
lineView.setLayoutParams(layoutParams);
lineView.setBackgroundColor(view.getSolidColor());
LinearLayout ly = new LinearLayout(view.getContext());
ly.setOrientation(LinearLayout.VERTICAL);
ly.addView(view);
ly.addView(lineView);
return ly;
}
/**
* 设置点击子项事件监听对象
* @param onItemClickListener
*/
public void setOnItemClickListener(OnItemClickListener onItemClickListener)
{
this.onItemClickListener = onItemClickListener;
setItemClickListener();
}
/**
* 获取点击子项事件监听对象
* @return
*/
public OnItemClickListener getOnItemClickListener()
{
return onItemClickListener;
}
/**
* 设置子项点击事件
*/
private void setItemClickListener()
{
if (adapter != null)
{
for (int i = 0; i < adapter.getCount(); i++)
{
View view = NoScrollingListView.this.getChildAt(i);
if (onItemClickListener != null)
{
//设置子项点击事件
view.setOnClickListener(new ItemClickListener(view, i, adapter.getItemId(i)));
}
}
}
}
class ItemClickListener implements OnClickListener
{
View view;
int position;
long id;
public ItemClickListener(View view, int position, long id)
{
this.view = view;
this.position = position;
this.id = id;
}
@Override
public void onClick(View v)
{
//将子项视图的点击事件转发到整个listview的OnItemClick事件中
//此方法有局限性,第一个参数 AdapterView<?> parent(即当前listView的视图)没传入onItemClick()中
onItemClickListener.onItemClick(null, view, position, id);
}
}
}